45945090 has 32 divisors (see below), whose sum is σ = 122520960. Its totient is φ = 12251952.

The previous prime is 45945089. The next prime is 45945091. The reversal of 45945090 is 9054954.

It is an interprime number because it is at equal distance from previous prime (45945089) and next prime (45945091).

It is a super-2 number, since 2×45945090² = 4221902590216200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45945091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84814 + ... + 85353.

It is an arithmetic number, because the mean of its divisors is an integer number (3828780).

Almost surely, 2^45945090 is an apocalyptic number.

45945090 is an abundant number, since it is smaller than the sum of its proper divisors (76575870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45945090 is a wasteful number, since it uses less digits than its factorization.

45945090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170183 (or 170177 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 45945090 is about 6778.2807554718. The cubic root of 45945090 is about 358.1621613805.

The spelling of 45945090 in words is "forty-five million, nine hundred forty-five thousand, ninety".